72617501325 has 24 divisors (see below), whose sum is σ = 127123345728. Its totient is φ = 36451137280.

The previous prime is 72617501311. The next prime is 72617501371. The reversal of 72617501325 is 52310571627.

It is a happy number.

It is not a de Polignac number, because 72617501325 - 2¹¹ = 72617499277 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28476177 + ... + 28478726.

It is an arithmetic number, because the mean of its divisors is an integer number (5296806072).

Almost surely, 2^72617501325 is an apocalyptic number.

72617501325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72617501325 is a deficient number, since it is larger than the sum of its proper divisors (54505844403).

72617501325 is a wasteful number, since it uses less digits than its factorization.

72617501325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56954933 (or 56954928 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 72617501325 in words is "seventy-two billion, six hundred seventeen million, five hundred one thousand, three hundred twenty-five".